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Biomedical subjects

W Piwowarska

Publications and source records attributed to W Piwowarska.

At least 73 records · Page 4Linked to original sources
PubMed1980

Effect of right ventricular pacing on T and ST changes of the electrocardiogram in endogenous beats.

38 patients with recurrent cardiotopic rhythm, treated by permanent "on demand" pacemaker, were investigated. 15 patients (group A) were observed for 14 days of pacing, 23 (group B) were observed from 7 to 68 months of pacing. Further, 17 persons were investigated--in 12 of them the endocardial electrode USCI had been placed in the right ventricle and left there for 24 hours. 10 persons were paced by endocardial bipolar USCI electrode from external pacemaker, the other two by unipolar electrode from permanent "on demand" pacemaker. In paced patients a negative deep T inversion and ST depression were observed. In persons paced for 24 hours the ST-T changes disappeared at the earliest 48 hours after pacing was stopped. Changes in repolarization caused by artificial depolarization should be taken into account when in patients with ventricular pacing and cardiotopic rhythm subendocardial infarction is suspected.

Adolescent↗
PubMed1979

Effect of cardiac pacing on ECG pattern in patients with myocardial infarction.

The ECG tracings in patients with recent and past myocardial infarction and permanent or temporary artificial pacing were analysed. The observations were made in 12 patients (8 with recent infarction and 4 with a past one). Anterior wall infarction was diagnosed in 4 subjects, anteroseptal in 3, inferior wall infarction was recognized in 4, and posterior wall infarction in one patient. In the stimulated complexes of persons with anterior and anteroseptal infarctions there appears a pathological Q deflection with ST segment elevation in leads I, aVL, V5. In the infarct of the inferior wall the ST segment elevation occurs in leads II, III, aVF without the presence of Q deflection. No differences were shown in the morphology of stimulated complexes in persons with recent and past myocardial infarction.

Acute Disease↗